Mill-step



STATES PATENT OFFICE.

JULIUS G. DICKEY, OF SARATOGA SPRINGS, NEW YORK.

MILL-STEP.

Specification of Letters Patent No. 13,161, dated July 3, 1855.

To all whom it may concern:

Be it known that I, JULIUS C. DICKEY, of Saratoga Springs, in the countyof Saratoga and State of New York, have invented a new and Improved Modeof Constructing Counter-Bridges and Tram-Blocks for Adjusting Grist-MillSpindles and other Vertical Shafting; and I do hereby declare that thefollowing is a full and exact description thereof, reference being hadto the accompanying drawings, forming a part of this specification.

The nature of my invention consists in constructing a counter-bridge andtramblock for adjusting grist mill spindles and other vertical shaftingand applying a roller to the lower end of the pot which contains themill spindle, and also applying to the said roller a lever made wedgingat the end where it comes in contact with the roller, and thus byraising the lever the roller is forced up an inclined plane and thus thespindle is raised or depressed, also securing the tube (which containsthe pot) to the tram-block foundation by means of cams, said cams beingpressed against the tube be tween the tube and uprights cast on thetram-block foundation, for the purpose of giving the spindle its lateralmotion.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

I construct my counter-bridge and tramblock of cast or wrought iron.

Figure 1, is a perspective view, and Fig. 2, is a cross section of thesame.

In Fig. 1, A, shows the mill spindle; B, the pot; C, the hollow tube; D,the roller; E, the lever; F, F, F, the cams, and H, the tram-blockfoundation.

In Fig. 2, A, shows the mill spindle; B, the pot; C, the hollow tube; D,the roller; F, F, the cams, and H, the tram-block foundation.

The spindle A, in Fig. 1, is inserted into the pot B, and the pot B, isinserted into the tube C, and on the lower end of the pot B,

are two flanges cast with slots in the same,

and into said slots I insert the ends of the roller D, which is providedwith a tenon on both ends; and on the outside and near the lower end ofthe tube C, I cast a flange, and on two sides of said tube and oppositeeach other I make slots passing up a short distance above the flange, inthe body of the tube, and forming an opening through the tube above theflange. The lever E, I make with a tenon on both sides which areinserted in the opening on both sides of the tube C, and rest on theflange cast on said tube. I also make another slot in tube C, forming anopening through the body of the tube, and the flange also, for the leverto work in; the lever being made sufliciently large to fill up the spacebetween the flanges on the pot B, the roller D, resting on the lever E.

In securing the lever in the tube C, I pass the tenon 0n the samethrough the opening in the tube C, above the flange sufliciently far toallow the tenon to be passed through on the opposite side, and thenraise the lever up into the slot made for that purpose. The lever wherethe roller rests on it is made wedging so that by raising the lever theroller is made to roll up an inclined plane, and thus raise the potwhich contains the mill spindle. The lever may be raised or depressed bymeans of a screw, or otherwise. The tram-block foundation H, I make withan opening in the center into which the tube C, is inserted and on theedge of which the flange on the tube rests, the opening beingsufliciently large to allow the tube to be moved to any desirableposition, and the length of the tube below the flange being made equalto the thickness of the tram block foundation. The cams F, F, F, I makewith a slot in them and make them wedging on one side of said slotsecuring them to the tram-block (H) by nuts and bolts (6) and bypressing them in between the tube C, and the uprights cast on thetram-block foundation which passes through said slots, I am enabled tosecure the tube C, firmly to the tram-block foundation and give thespindle its lateral motion.

In Fig. 2, A, shows the mill spindle; B, the pot, C, the tube; D, theroller; F, F, the cams, and H, the tram-block foundation. The tram-blockfoundation H, may be secured in any desirable position by means of boltsor otherwise.

I claim- The application of the roller D, and lever E, for adjusting theheight of the mill spindle when the latter rests in the tube C, and saidtube is secured to the tram-block in the manner set forth.

JULIUS C. DICKEY. Witnesses:

E. H. BATES, I. H. MOILVAINE.

